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Table 2 Comparison of variables between subjects with faster versus slower self-reported walking speed (N = 1008)

From: Association between self-reported walking speed and calcaneal stiffness index in postmenopausal Japanese women

Variable

Faster (n = 418)

Slower (n = 590)

P valueb

Age (years)

68.4 ± 8.0

69.6 ± 8.6

0.030

Body mass index (kg/m2)

22.3 ± 3.1

23.1 ± 3.6

<  0.001

Stiffness index

68.5 ± 12.4

64.8 ± 13.1

<  0.001

Grip strength (kg)

21.6 ± 4.8

20.2 ± 5.3

<  0.001

One or more comorbiditya

50 (12.0)

110 (18.6)

0.004

Current smoking

8 (1.9)

14 (2.4)

0.623

Current alcohol drinking

58 (13.9)

61 (10.3)

0.086

  1. Data are shown as mean ± standard deviation or number (%)
  2. aHeart disease, lung disease, stroke, or diabetes mellitus
  3. bStudent’s t-test was used to analyze continuous variables; the chi-square test was used to analyze categorical variables